After playing all of the games I have noticed a few things and come up with a few ideas, I wonder what you guys think.
First I like the new city state thing in Civ V, I think its a nice idea, but I think they should take it a step furthur. Instead of having city states straight out it should go like this. Stone age you have cities and there are barbarians around. If a barb camp stays around for long enough (lets say till one person goes up in era) that barbarian camp becomes a city state, lets say for this example, Oslo. Ok now oslo is a city state in the game, interacts as a city state. Game progresses people hit a new age (lets say industrial) now the city state looses it's city state clasification and becomes a full fledged civilization, no special units or abilitys since there unplayable, but now, where there once was a barbarian tribe you have a Norwegian civilization.
Alternativly, change the way barbarians work mid to late game. Its nuts to see a little wooden camp on a shore with NO resources producing battleships or mechanised infantry. Once you hit a certain point the barb camps should go away, if the game keeps the barb mechanic it should become 'insurgent' or 'terrorist' using modern weapons and equipment. and not have a set base camp, so you have to hunt them down (but dont appear in your territory)
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Second think I think should be put in is a civil war mechanic. If your civ happiness drops below like 10 or 15, a significant number some of your cities and armies would turn hostile and take a new name (specificly one for a government type you do not have. Like you can take the Loyalty branch of culture and get monarchy. Your troops and civ would be come Kingdom of America, against another, different one, like Communist Socialist States of America, or Theocratic States of America. You would have to choose which side to support (it would also swap your culture, if you had loyalty and not piety if you took the ones with piety you would get the piety track and loose the loyalty bonus)
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Another idea I had is that they should take the multiple leader thing from Civ IV, where you had a choice of leaders with different bonuses, and impliment that in Civ V. Not in the way that it was in IV but like this.
You choose to play as Japan. You either choose, or its random, lets say you Start as Japan in the Stone age with tokugawa. When you age to the classical era tokugawa dies, you loose his specific leader bonus and your new leader would be (at random or choice) lets say, HiroHito. Once that age ends you get a different leader, lets say for medieval you take Meiji, etc, etc.
Each time a new leader takes charge of a nation, MOST past transgressions are wiped clean. Stone age wars do not affect medieval age politics. If you were denounced by Washington when Kennedy takes power in America you have a clean slate unless they inherit wars.
It would also, though, bring new issues. King George might not care if you have wonders, but Churchill might covet the ones you have. Peter the Great in Russia might not be war like and want peace but Stalin would be aggressive and want war with his neighbors. Tokugawa might trade with everyone where the Meiji wants isolationism.
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Lastly is just a comment that I think techs dont take long enough, eras fly by, and if you play longer games there just as fast because building units and buildings take that much longer as well. Either make the techs longer to give more time in an era for wars and politics in that era, or give more techs and get more in depth with the technology. Like instead of going from warrior to swordsman by researching forging you should have to research a tech to make swords, then research a tech to make shields which would then give the swordsman a defensive bonus (and change the in game model to give him a shield).
Also, there should be more clear cut tech paths. What I mean is, let say your land locked, no water, there should be a full tech tree for economic and land military set up that you can take to the end of the game without touching fishing or any other water techs. alternatively if you want water techs there should be a full and complete tech list that you can follow, and ignore land tech if you wanted to.
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Oh, also, I wish they would stop ignoring the first world war (they included the early industrial era with ironclads but still, no Bi planes, no early tanks. There should be a WWI and WWII era infantry units, with the early one having the ability to build trenches for defense themselves, removing a tile, and building it on territory owned by anyone (pillage then build over)
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LAST THING is just a comment on the new DLC
Im having alot of fun with the Polynesians, the moai statues are great BUT there just statues on the coast, there is a full, massive tile left untouched. You should beable to build another improvement on those tiles as well, but not have it yield as much.
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Well those are my ideas and my 2cents. Id like to hear your opinions on them.
EDIT: begging fraxis for this fix... Please... remake Cathrine's face it looks... HORRIBLE it doenst look real, compared to some of the others in the game. Also, make Washington sound more... eloquent, I can handle the accent even if it is the Foghorn Leghorn southern accent, but I cant take how he talks like hes uneducated and wasnt a british general, an american general, and a president.
Moderator Action: Merged into the Suggestions thread due to the multiple suggestions.
to it for mentioning Laser Squad. Possibly the only game I have gotten more enjoyment from than Civ.
suddenly I feel very old.. 
